What was found
DURING HEAVY CHECK, RIB SUPPORT ANGLE AT LT WHEEL WELL FWD BULKHEAD HAS CRACK RADIATING FROM BOTH DIRECTIONS FROM OTBD FASTENER. MAINTENANCE R & R RIB SUPPORT ANGLE AT LT WHEEL WELL FWD BULKHEAD IAW SRM 51-43-03, PN 170-30709-001, SUPPORT.